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storage.go
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storage.go
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// Copyright 2018 The Gardener Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package storage
import (
"github.com/gardener/gardener/pkg/apis/garden"
"github.com/gardener/gardener/pkg/registry/garden/shoot"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
"k8s.io/apiserver/pkg/registry/generic"
genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
"k8s.io/apiserver/pkg/registry/rest"
)
// REST implements a RESTStorage for shoots against etcd
type REST struct {
*genericregistry.Store
}
// ShootStorage implements the storage for Shoots and their status subresource.
type ShootStorage struct {
Shoot *REST
Status *StatusREST
}
// NewStorage creates a new ShootStorage object.
func NewStorage(optsGetter generic.RESTOptionsGetter) ShootStorage {
shootRest, shootStatusRest := NewREST(optsGetter)
return ShootStorage{
Shoot: shootRest,
Status: shootStatusRest,
}
}
// NewREST returns a RESTStorage object that will work against shoots.
func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, *StatusREST) {
store := &genericregistry.Store{
NewFunc: func() runtime.Object { return &garden.Shoot{} },
NewListFunc: func() runtime.Object { return &garden.ShootList{} },
DefaultQualifiedResource: garden.Resource("shoots"),
EnableGarbageCollection: true,
CreateStrategy: shoot.Strategy,
UpdateStrategy: shoot.Strategy,
DeleteStrategy: shoot.Strategy,
}
options := &generic.StoreOptions{RESTOptions: optsGetter}
if err := store.CompleteWithOptions(options); err != nil {
panic(err)
}
statusStore := *store
statusStore.UpdateStrategy = shoot.StatusStrategy
return &REST{store}, &StatusREST{store: &statusStore}
}
// Implement CategoriesProvider
var _ rest.CategoriesProvider = &REST{}
// Categories implements the CategoriesProvider interface. Returns a list of categories a resource is part of.
func (r *REST) Categories() []string {
return []string{"all"}
}
// StatusREST implements the REST endpoint for changing the status of an shoot
type StatusREST struct {
store *genericregistry.Store
}
// New creates a new (empty) internal Shoot object.
func (r *StatusREST) New() runtime.Object {
return &garden.Shoot{}
}
// Get retrieves the object from the storage. It is required to support Patch.
func (r *StatusREST) Get(ctx genericapirequest.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
return r.store.Get(ctx, name, options)
}
// Update alters the status subset of an object.
func (r *StatusREST) Update(ctx genericapirequest.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc) (runtime.Object, bool, error) {
return r.store.Update(ctx, name, objInfo, createValidation, updateValidation)
}
// Implement ShortNamesProvider
var _ rest.ShortNamesProvider = &REST{}
// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
func (r *REST) ShortNames() []string {
return []string{""}
}